-21.2% is the change from 434 to 342
Calculation steps:
[( 342 - 434 ) ÷ 434] x 100 = -21.2%
Formula
Percentage change = [(342 - 434) / 434] x 100
Subtract the new number by the original number
342 - 434 = -92
-92 ÷ 434 = -0.2119815668202765
-0.2119815668202765 x 100 = -21.2%